Intracavity probes and interfaces therefor for use in obtaining images and spectra of intracavity structures using high field magnetic resonance systems

a high-field magnetic resonance and intracavity probe technology, applied in the field of intracavity probes, can solve the problems of inability to use mr systems designed to operate, inherent single coil approach,

a high-field magnetic resonance and intracavity probe technology, applied in the field of intracavity probes, can solve the problems of inability to use mr systems designed to operate, inherent single coil approach,

US20090076378A1Inactive Publication Date: 2009-03-19DXTX MEDICAL INC
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  • Intracavity probes and interfaces therefor for use in obtaining images and spectra of intracavity structures using high field magnetic resonance systems
  • Intracavity probes and interfaces therefor for use in obtaining images and spectra of intracavity structures using high field magnetic resonance systems
  • Intracavity probes and interfaces therefor for use in obtaining images and spectra of intracavity structures using high field magnetic resonance systems

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Embodiment Construction

[0047]In all of its embodiments and related aspects, the present invention disclosed below is ideally used with magnetic resonance (MR) systems designed to operate at 3.0 Tesla field strengths; though it is also applicable to those operable from approximately 2.0 to 5.0 T. For purposes of illustration below, the invention will be described in the context of the 3.0T systems produced by General Electric Medical Systems (GEMS).

[0048]FIGS. 1-7 illustrate one aspect of a first embodiment of the invention, namely, an intracavity probe, generally designated 1. The probe is intended for use with an MR system to obtain images or spectra of a region of interest within a cavity of a patient. It is described herein in a specific implementation, i.e., as an endorectal probe designed to be inserted into the rectum to obtain images and / or spectra of the male prostate gland. Although presented herein as an endorectal probe, it should be understood that the invention is equally capable of being ada...

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Abstract

An intracavity probe for use with an MR system allows images or spectra of a region of interest within a cavity of a patient to be obtained. The probe includes a shaft, a balloon at one end thereof, and a coil loop within the balloon. The coil loop preferably includes two drive capacitors and a tuning capacitor, all of which in series. A junction node between the drive capacitors serves as a ground for electrically balancing the coil loop. Diametrically opposite the junction node, the tuning capacitor enables the coil loop to resonate at the operating frequency of the MR system. Across each drive capacitor is connected an output cable having an electrical length of SL+n(λ / 4). The output cables terminate in a plug that is used to connect the coil loop to an interface device for the intracavity probe.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)[0001]This application claims the benefit of U.S. Provisional Application 60 / 628,166, titled System And Method Of Obtaining Images And Spectra Of Intracavity Structures Using 3.0 Tesla Magnetic Resonance Systems filed on 15 Nov. 2004. That provisional application has been assigned to the assignee of the invention disclosed below, and its teachings are incorporated into this document by reference. The present application is also a continuation-in-part of PCT International Application No. PCT / US03 / 07774 filed 13 Mar. 2003.FIELD OF THE INVENTION[0002]The present invention generally relates to systems and methods of obtaining images and spectra of intracavity structures using magnetic resonance (MR) systems. More particularly, the invention pertains to an intracavity probe capable of being inserted into various bodily openings, such as the rectum, vagina, mouth, etc., to obtain high resolution images of and spectroscopic results for regions of in...

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Application Information

Patent Timeline
19 Mar 2009
Publication
US20090076378A1
IPC
A61B5/05
CPC
A61B5/055; A61B5/6856; G01R33/34; G01R33/3642; G01R33/34092; G01R33/3415; G01R33/3628; G01R33/34084
Inventors
MISIC, GEORGE J.